How much is on the clock?

To whoever out there,
I'm sorry to be here with a question.
What is the meaning of *How much is on the clock*?

Does that mean the price? or the time?

Thank you for your kindness

It can refer to the mileage recorded on the mileometer of a car. In other words, how much has this car been used?

It can also refer to the cost of a taxi ride shown on the taxi meter.